Waste fuel-making method and apparatus



June' 16, 1931. R, E. CALLER WASTE FUEL MAKING METHOD AND APPARATUS Filed March 25, 1927 o NAW' n, m. ,u ma ou mmm .k MJY, 1 e a H n. n HH- .H Ih. n nu. n |H|J Ill nun. n nu. .n nun. zu J 2 u. l A u f ATTOR Patented June 16,

y rsoasia PATENT- .oFFlcE RAYMOND E. cALLEn, *or "scARsnALEQ NEW vom:

l wnsra FUEL-MAKING METHOD AND APPARATUS i application mea march 25, 1927. serial No. 178,398. I

This invention relates to methods and apparatus for converting waste material to useful material, and more particularly to mea'ns for deodorizing garbage and the like,

converting it to fuel and usefully burning it, though it is noted that the invention isv not limited to garbage treating or deodorizing nor in some respects evento fuel' burning devices.

` .an efficient apparatus and 'method of this kind which will receive and disintegrate the garbage. and the like, convert .it into fuel for doing useful work and at the same time prevent the escape of disagreeableodors from the material.

Another 'object of the invention is to provide an apparatus of this kind with convenient means for keeping it in operation if the garbage or the like should give out.

Another object' of the invention is to rovide a suitable method and apparatus or the removal of undesirable articlesbefore passing them to the system.

E, Other oblects of the invention are-to im-v prove generell the simplicity and efficiencyy of such metho sand apparatus, and to provide an apparatus of this kind which is very economical, durable and reliable in operation, and economical to construct.

Still other objects ofthe invention will appear as the description proceeds; and while herein details of the invention are described and claimed, the invention is not limited to these, since many and various changes may be made without departing from the scope of the invention as claimed in the broader claims.

The inventive features for the accom lishment of these and other objects ares own v herein in connection with an improved rubf bish. and arbage converting; apparatus which, briey stated, includesla dismtegrator for the garbage,rubbish and like material from which means including a fan and conveyor pipes draw fumes and material and discharge them into a collector receiving -the discharge end of the conveyor pipe. lMeans r including an exhaust pipe and a fan draw lair "o and fumes from said collector and discharge One Object of the invention is to provider separator 19,'for separating-out an`d dischargthem in a boiler furnace for aiding in .supporting the combustion'in thefurnaceand eodorizin the fumes. vA flue romv the furnace conducts combustion gases through a drier chamber and w heatsa drier passing through said chamber which air takes "up hot fumes and further 6I not only aids in drying the Amaterial 'in the drier 'butaerates and completely deodorizes thematerial; and means including a fan and a pipe conduct the hot fumes from the drier into the furnace to further support the cor'n- 79 bustion. Throughout the whole system there is no chance forthe fumes to escape before j they pass into the furnace and are deodorized and converted to oxides as they support the combustion. 75

An emergency feeder isprovided for discharging plilverized coal `into the furnace and air 'to the draft pit thereof, should the su ply of garbage giveout or run low.

y this method I separate the fuming materials from the fumes, conduct the fumes support combustion and feed the materlal as fuel 'to the seat of combustion for makmg steam or doing other useful work. l

, In the accompanying drawings, showing by way of example, one of many possible einl bodiments of the invention, Fig. lis a diagrammatic fragmental vertlcal sectional view, partly in elevation, showingvthe assembled apparatus;

. ig. la is a fragmental side elevation of the disintegrator, complementary to Fig. 1; and Fig. 1b is a fragmental side elevation showing the emergency feeder, also complemen?. tary to Fig. 1.l I' In practice, the rubbish, garbage, sheet metal containers and like materials are deliverecl to the inlet ho per 1p()l (Figi. 1a) of a disintegrator or hog ll'having a magnetic m0 ing the disintegrated metal material. This yglass and other undesirable A centrifu al fan 2O (lower left hand cor-y ner of Fig. '1 is provided with an inlet p ipe 21 (Figs. 1 and 1a) whichd serves for drawing air, cold garbage `fumes and non-magnetic material from the disintegrator and has an 'uprightconveyor pipe 22, for the materials, here shown secured to a building 23 and the like, and extending a distance above the level of the disintegrator and provided with a horizontal discharge end 24 extending to an axially vertical centrifugal collector 25 Isupported on the building and tangentially -receivinfr said discharge end at its up er part whereby the materials are separated rom the air and fumes and fall to the bottom of the collector.4

An air exhaust pipe 28 from the center ofk the upper part of the separator, curving and extending downward as at 29, extends to one side of a 4double centrifugal 'fan 30 onthe floor 31 near and somewhatabove the level of the disintegrator. Said fan comprises ya hot fume fan chamber and a cold fume fan chamber, the latter being connected to and `drawing air and cold fumes from said air ex- Y haust pipe 28, the outlet of the same chamber being connected to a downwardly extended cold draft pipe 32 extending into the draft pit 33 of a water tubular boiler 34 suitable for supplying steam for commercial purposes and provided withI a furnace 35 having a y grate 36 for'burning disintegrated material.

Said draft pit 33 receives draft air and fumes l under pressure from said draft pipe to suport the combustion and to burn and deodor- 1ze the fumes.

A flue 38 extending upwardly from the boiler to carry off combustion gases, and havlng a cold air inlet 39 at its upper part, discharges into an elongated exhaust gas chamber 40 joining the flue at the lower part of one end and provided with a smoke stack 41 at 67 4the upper part of the other end, the interior of the chamber having vertical transverse lbailles 42, 43 forming a sinuous passage for the hot gases through the chamber.

An inclined elongated, continuously rotatled cylindrical drier 45 is disposed in the chamber 40, and is heated by the lcombustion gases. The drier is provided with stationar 4upper and lower heads 46, 47 each provi ed with an upper air opening and a lower material opening. The air entering at the `cold air inlet 39 revents over-heating of the to be dried by heat from the chamber 40, and

also by heated air, as will be later explamed.

vAnautomatic stoker below the lower end of the drier and provided with a closed storopening of the lower head 47 and a feed pipe 52 delivers the material as fuel to the furnace 35 throughA the upper part of a wall 54 thereof.'

An economizer conduit 55 passing through vthe lower part of the flue 38 and receiving exterior air at yits inlet end 56, preheats the air and extends to the upper openin of the lower head 47, whereby the eate air is passed over the agitated material to further r fuihesv therefrom through a hot garbage fume pipe 57 extending from .the upper opening of the upper head 46 to the intake Iof the hot fume chamber of the double fan 30, the discharge port of the hot chamber being provided with a hot draftpipe also discharging into said draft pit 33. Thus both the cold and hotv fumes ksupport the combustion in the furnace and are thereby deodorized. It will thus be noted that the preheated air serves not only to dry the garbage, kbut to aerate and com letely deodorize it by removing the resi ual malodorous fumes therefrom.

In order to keep the boiler runnin when the supplyof garbage or the like ails, I

rovide a coal pulverizer and emergency eeder 60 (Fig. 1b) comprising a coal receiving hopper 61, a discharge conduit 62 (Fig. 1b and lower right hand corner ofl Fig. 1) for dischar ing pulverized coal into .the .furnace throng a nozzle 63 at the mid part of one wall. The feeder-also has a compressed air pipe 65 discharging into a conuit 66 in turn discharging at its lower end into the draft pit 33 and at its upper end 67 around the nozzle into the furnace. A valve 68 in the up r part of the conduit serves for closing the atter when the coal feeder is not in use to prevent the air from it 33 from passing into the furnace at sai upper end The operation may be summarizedy as follows:

The rubbish, garbage and the like is exposed on the belt 15 to permit picking articles therefrom and magnetically removing some of magnetic articles by the pulley 16. First, the materials are disintegrated, and the magnetic material is separated out; and,

then, the garbage fumes and the non-magnetic disintegrated material are carried to the collector 25 and the materials separated the latter and remove the hot drying -age bin 51 receives material from said lower Y from .the fumes, the fumes being pneum'atically conducted by the fan and pipes 28,

32 into the furnace of the boiler to support combustionand deodorize these fumes.,

The separated materials' from the collector are conveyed and agitated inthe drier 45` adjacent to, but out of contact with, the fur-- from the agitated` material are drawn oif through the pipe 57 and discharged into said draft pit. Then the dried materials Iare fed to the furnace and burned for heating the water inthe boiler 34. i

It is particularly noted that the apparatus is entirely closed except at the disintegrator l 11, the inlets 56 and 39 and the stack 4l, thus confining and preventin fumes until they have been deodorized by 'burning in the furnace;

I claim as my invention: *L

1. In combination, avdis'integrator; a collector; a furnace having a draft pit; means for drawing fumes and material from the disintegrator and delivering them to the col'- lector; means including a fan having cold fume and hot fume chambers drawing air and fumes from the collector and delivering 'them to the furnace through said cold fume chamber of the fan; a Hue extending upwardly from the furnace; a drier chamber receiving hot gases from the Hue and lprovided with a stack;`an'inclinedcontinuously i rotar cylindrical ldrier passing through said cham er; a conveyor pipe from the collector to the upper end of the drier; a stoker receiving material from the lower end of the drier and delivering fuel to the furnace; anv economizer conduit' passing through the Hue receiving and preheating exterior air, and

extending to the lower end of the drier; a hot garbage fume ipe from the upper end of the drier to the intake of the hot fume chamber of .the fan, said chamber discharging.

into said draft pit; and an emergency feeder' -for discharging pulverized coal into the fur-A nace and alr to the draft pit.

.2. In combination, a disintegrator; a fan associated with said disintegrator drawing fumes and material from the disintegrator and having a discharge conveyor pipe associated therewith; a collector receiving the discharge end of the conveyor ipe; an air and fume exhaust pi e from t e collector;

a double fan associate with said exhaust ipe having a hot chamber and a cold cham er, the latter drawing air and fumes from said exhaust pipe; a boiler provided with a `furnace having a draft pit receiving air from said cold chamber; a Hue extending upwardly from the furnace and having a fresh air` inlet; a drier chamber receiving hot gases from U the escape of anyl air, and extending to the lower end of the y drier; a hot fume pipe from the upper end ofthe drier to the intake of the hot cham-i ber of said fan, said'hot chamber discharging Y linto vsaid draft pit.

3. The herein describedmethod of treating garbage which consists in, sorting extraneous matters from the garbage, cominuting the garbage from which the said matters have been removed, exhausting malodorous fumes emanating from the said comminuted garbage, and simultaneously therewith progressively conveying said comminuted garbage through a drying zone supplied with heat derived from the subsequent1 combustion of said dried comminuted garbage, conveying said dry garbage to a zone of combustion, preheating air with the heat derived from the f combustion of said garbage and passing saidv preheated air intocontact with the comminuted garbage while. the garbage is being v dried, in a direction counter to that of the direction of conveyance of said garbagethrough said drying zone, whereby the drying and deodorization of said garbage is accelerated, combining saidair after contact with said drying garbage, with said exhausted malodorous fumes and blowing said combined fumes and air into said combustion zone of said dried comminuted garba e, whereby said fumes .and air are complete y deodorized, utilizing the hot gases derived from said combustion to preheat said garbage con-- tacting air and supply heat to said arbage dryingvzone, land finally expelling t e nonoilorous gases of combustion into the atmosere. p 4. The method of treating garbage from which extraneous materials have been removed which consists in continuously and automatically passing said garbage from the receiving hopper through the a paratus to the furnace and ash pit and in rst oomminuting said garbage in its said passage through the apparatus, then partially deodorizing said garbage in its passa e by exhausting malodorous fumes there rom into the furnace, then revolving and simultaneously drying, aerating and completely deodorizing the part product of said comminuted garbage in its said passage by inducing a stream of hot air to pass thereover andexhausting said air into the furnace without escape of any of the malodorous fumes therefrom into the v atmosphere, subjecting the second part prof duct of said dried garbage to combustion in bage in `its said and finally utilizing the heat derived from said combustion to dry said comminuted garbage priorto combustion.

5. A method of garbage disposal which consists in continuously and automatically passing said rbage from the receiving hopper through t e-apparatus to the furnace and ash pit, rst sub]ecting said garbage in its said passage throu hkthe apparatus to magnetic separation w ereby all magnetic material is removed therefrom, then comminuting vsaid remainin garbage in its said passage, then subjecting said comminuted garbage toan exhausting step whereby malodorous fumes are withdrawn from said garbage in its said passage, into the furnace then revolving and subjecting the part roduct of said comminuted garbage in assage to simultaneous drying and/aerating by inducing a stream of hotl air to pass thereover and exhausting said air into the furnace without escape of any o the malodorous fumes therefrom into the atmosphere, ,whereby said garbage is comletely dried and deodorized, then subject- 1ng the second art product of said dried garits sa1d passage to combustion in the presence of said exhausted malodorous fumes whereb said fumes lare deodorized, and finally utilizin the heat derived from said combustion to ry said comminuted garbage rprior to combustion. 6. l he method of disposin of garbage and utilizing the combustion products thereof for steam generation which consists in continuously and automatically passing said garbage from the receiving hopper through the apparatus to the furnace and ash pit and includes the steps of first subjecting said garbage in its said passage through t e said apparatus to magnetic separation to remove allmagnetic material, then comminuting said the furnace without esca remaining garbage in its said assage, then revolving and simultaneously rying, aerating and deodorizing the said comminute garba e by inducing a stream of hot airfto pass t ereover and exhaustingsaid air into e of any of the malodorous fumes thereof into the atmosphere, and/finally burning the part product of said dried arbage in its said assage in the presence o y saidmalodorous umes whereby said fumes are deodorized.

. 7. A garbage disposal system' comprising a garbage disintegrator, a discharge conveyor conduit associated with said disintegrator, a fan associated conduit ada ted to blow disintegrated garbage throug said conduit, a collector associated with said conduit adapted to receive said disintegrated garbage, a `fume exhaust conduit associated. with said collector adapted 1 to receive malodorous fumes from the garbage in said collector, a suction fan associated with said fume conduit adapted to draw oif with said' disintegrator andthe malodorous fumes from the garbage in i said collector through saidfume conduit, a drier means connected with. said collector ada ted to receive and dry said garbage from sai collector, an incinerator connected'with said fume conduit and said drier and means adapted to burn said disintegrated garbage in the presence of'said 4exhausted malodorous f l f sociated with said neumatic means adapted to receive said wit drawn garbage, a pneumatic exhaust means associated with said collector adaptedto withdraw malodorous fumes and air from the disintegrated garbage in the collector an incinerator associated with pneumatic exhaust means adaptedto receive said malodorous fumes and airin the combustion zone thereof, conduit means associated with said collector adapted to convey the garbage in said collector to said combustion zone 1n said incinerator, a rotary drier in said conduit means and another exhaust means adapted to dry and aeratefthe garbage as itis conveyed to the incinerator, and conduit means connected between the garbage inlet of the drier and said other exhaust means to withdraw the residual malodorous fumes in said rbage fed to said incinerator.

\ 9. incinerator system including a rotary downwardly sloping drier, means associated therewith adapted to feed garba into said drier, an'economizer connected t ereto d above the garbage outlet end of said drierand supplying a stream of heated air thereto in a direction opposite to the movement of the garbage through said drier, a garbage furnace associated with said drier, a stoker associated with said drier and furnace for feeding garbage issuing from said drier to said furnace a suction fan and a conduit connected to the drier at a point above the garbage inlet end thereof, for exhausting said heated air with fumes'from the drying garbage in said drier and passing them into the said furnace.

10. A garbage disposal system comprising a disintegrator, a collector,A a furnace having a iiue, a conduit including fan means, as-y sociated with said disintegrator and saidcollector, for delivery of comminuted garba and fumes from the disintegrator to the co 7 v lector, a second conduit and fan means associated with said collector and said furnace, for drawing air and `fumes from the collecrecano tor and delivering them to the furnace, a drier receiving disintegrated garbage material from the collector and delivering it into the v furnace, a conduit disposed in the path of the 5 ue gases and conducting air into the drier,

and additional conduit and fan means lconlnected between the garbage inlet of said drier and said furnace for conducting fumes from 1- the drier into the furnace. t ,o A garbage disposal system comprising a dlsintegrator, a fan and dlscharge conveyorpipe associated with saididi'sintegrator f or drawing fumes and material from the dlgsintegrator a collector receiving the discharge ,5 Aefnd of the conveyor pipe, a boiler having a. Y furnace, means includin an exhaust pipe and a fan associated with said collector for drawing air and fumes from said collector and delivering them to the furnace, an exhaust gas 20 chamber, a flue from the furnace to the exhaust gas chamber, a drier disposed in said chamber, a pipe conveying material from ,the collector to the drier, means delivering matef I rial from the drier into the furnace, an econo- A 25 mizer conduit passing throu h the flue and conducting exterior air into t e drier, and an? additional conduit between the garbage inlet Yof the drier and the furnace for con ucting hot. fumes from the drier into the furnace. 30 Signed-at New York Iin the county of New .York and State of New York this 24th day of' March A; D. 1927. RAYMOND E. CALLER. 

